Bitcoin's price is declining, trading below $66,800 and the 100-hourly simple moving average. It recently fell from a resistance level near $66,850 and broke below a bullish trend line at $66,500. Bitcoin might drop below the $65,500 support zone if the downward trend persists. Immediate resistance levels are at $66,500 and $67,000; surpassing these could lead to a short-term increase. However, failing to hold above these levels could push the price towards the $65,000 support zone.